vintage glass cloche, bell shaped display dome hand blown glass

Hand blown glass cloche with a simple, graceful bell shape. So pretty! I'm not sure of its exact vintage, it's so hard to tell with something like this.

Size is 5 1/2" across the bottom at the center. It's 8" tall INSIDE the dome at the top center, shape falls away shorter as it slopes. Condition is very good, nice and clear, no chips or roughness.